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Double-Concave Lenses
Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.
Visopto(Jiangsu Dingle)Advanced Technology Optical Co., Ltd [Verified]

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NCM Battery Cell
NCM lithium battery cell is used for packing lithium battery. Energy density of NCM li-ion battery cell is bigger than traditional lead acid battery cell and LFP battery cells. The cylindrical cell continues to be one of the most widely used packaging sty
QSPOWER (Shenzhen) Co., Ltd [Verified]

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